CLTexImage.h

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//      File:           CLTexImage.h
//      Author:         Changchang Wu
//      Description :   interface for the CLTexImage class.
//                                      class for storing data in CUDA.
//
//      Copyright (c) 2007 University of North Carolina at Chapel Hill
//      All Rights Reserved
//
//      Permission to use, copy, modify and distribute this software and its
//      documentation for educational, research and non-profit purposes, without
//      fee, and without a written agreement is hereby granted, provided that the
//      above copyright notice and the following paragraph appear in all copies.
//      
//      The University of North Carolina at Chapel Hill make no representations
//      about the suitability of this software for any purpose. It is provided
//      'as is' without express or implied warranty. 
//
//      Please send BUG REPORTS to ccwu@cs.unc.edu
//
#if defined(CL_SIFTGPU_ENABLED)

#ifndef CL_TEX_IMAGE_H
#define CL_TEX_IMAGE_H

class GLTexImage;

class CLTexImage
{       
protected:
        cl_context              _context;
        cl_command_queue        _queue;
        cl_mem                  _clData;
        int                             _numChannel;
        int                             _imgWidth;
        int                             _imgHeight;
        int                             _texWidth;
        int                             _texHeight;
        int                             _bufferLen;
    int                 _fromGL;
private:
    void ReleaseTexture(); 
public:
        void SetImageSize(int width, int height);
    void SetPackedSize(int width, int height, int packed);
        void InitBufferTex(int width, int height, int nchannel);
        void InitTexture(int width, int height, int nchannel);
    void InitPackedTex(int width, int height, int packed);
    void InitTextureGL(GLuint tex, int width, int height, int nchannel);
        void CopyToHost(void* buf);
        void CopyFromHost(const void* buf);
public:
    int CopyToPBO(GLuint pbo);
    int GetImageDataSize();
public:
    inline operator cl_mem(){return _clData; }
        inline int GetImgWidth(){return _imgWidth;}
        inline int GetImgHeight(){return _imgHeight;}
        inline int GetTexWidth(){return _texWidth;}
    inline int GetTexHeight(){return _texHeight;}
        inline int GetDataSize(){return _bufferLen;}
    inline bool IsImage2D() {return _bufferLen == 0;}
        inline int GetImgPixelCount(){return _imgWidth*_imgHeight;}
        inline int GetTexPixelCount(){return _texWidth*_texHeight;}
public:
    CLTexImage();
        CLTexImage(cl_context context, cl_command_queue queue);
    void SetContext(cl_context context, cl_command_queue queue);
        virtual ~CLTexImage();
        friend class ProgramCL;
        friend class PyramidCL;
    friend class ProgramBagCL;
    friend class ProgramBagCLN;
};

//transfer OpenGL Texture to PBO, then to CUDA vector
//#endif 
#endif // !defined(CU_TEX_IMAGE_H)
#endif